AVO Logo
Site Map | FAQ |
Alaska Volcano Observatory
Summary | Color Code Definitions | Webcams | Webicorders | RSAM | Activity Notifications | Notification Search | Great Sitkin | Cleveland | Shishaldin 
You are here: Home > Current Volcanic Activity > Activity Notifications

VOLCANO ACTIVITY NOTIFICATIONS

2017
December (19 reports)
November (33 reports)
October (31 reports)
September (33 reports)
August (47 reports)
July (52 reports)
June (59 reports)
May (40 reports)
April (35 reports)
March (39 reports)
February (51 reports)
January (80 reports)
2016
December (52 reports)
November (32 reports)
October (32 reports)
September (30 reports)
August (33 reports)
July (36 reports)
June (33 reports)
May (36 reports)
April (34 reports)
March (36 reports)
February (30 reports)
January (32 reports)
2015
December (34 reports)
November (33 reports)
October (39 reports)
September (36 reports)
August (32 reports)
July (36 reports)
June (32 reports)
May (36 reports)
April (35 reports)
March (34 reports)
February (28 reports)
January (34 reports)
2014
December (32 reports)
November (36 reports)
October (34 reports)
September (33 reports)
August (33 reports)
July (35 reports)
June (39 reports)
May (33 reports)
April (32 reports)
March (32 reports)
February (30 reports)
January (35 reports)
2013
December (33 reports)
November (31 reports)
October (34 reports)
September (32 reports)
August (34 reports)
July (32 reports)
June (36 reports)
May (36 reports)
April (29 reports)
March (35 reports)
February (30 reports)
January (32 reports)
2012
December (30 reports)
November (32 reports)
October (31 reports)
September (31 reports)
August (32 reports)
July (31 reports)
June (32 reports)
May (32 reports)
April (30 reports)
March (35 reports)
February (30 reports)
January (8 reports)
2011
December (27 reports)
November (31 reports)
October (31 reports)
September (30 reports)
August (31 reports)
July (15 reports)
June (4 reports)
May (4 reports)
April (5 reports)
March (31 reports)
February (28 reports)
January (31 reports)
2010
December (31 reports)
November (30 reports)
October (31 reports)
September (30 reports)
August (9 reports)
July (5 reports)
June (14 reports)
May (10 reports)
April (13 reports)
February (4 reports)
January (10 reports)
2009
December (5 reports)
November (1 report)
October (22 reports)
September (31 reports)
August (29 reports)
July (36 reports)
June (33 reports)
May (37 reports)
April (35 reports)
March (58 reports)
February (30 reports)
January (39 reports)
2008
December (32 reports)
November (32 reports)
October (35 reports)
September (32 reports)
August (45 reports)
July (45 reports)
June (30 reports)
May (32 reports)
April (30 reports)
March (5 reports)

Older reports can be found here.

Report Text
Printer friendly version

(1) VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)
(2) Issued: (20170627/0248Z)
(3) Volcano: Bogoslof (VNUM #311300)
(4) Current Color Code: ORANGE
(5) Previous Color Code: ORANGE
(6) Source: Alaska Volcano Observatory
(7) Notice Number:
(8) Volcano Location: N 53 deg 55 min W 168 deg 2 min
(9) Area: Aleutians
(10) Summit Elevation: 492 ft (150 m)
(11) Volcanic Activity Summary: Seismicity for the eruption at Bogoslof volcano at 00:45 UTC on June 27 (16:45 AKDT on June 26) remained elevated until 00:59 UTC (16:59 AKDT) and has since declined to background levels. The eruption produced a volcanic cloud moving northeast with an estimated altitude of 25,000 ft asl by satellite data, and a pilot reported a visible cloud at 22,000 ft asl. Given the lower altitude of the volcanic cloud and short duration of the explosion, the Aviation Color Code remains ORANGE and Volcano Alert Level WATCH.

Recent eruptive episodes have produced multiple short-duration explosions interspersed with minutes to hours of inactivity between events, and future explosions could occur with little to no warning. AVO will continue to monitor seismic and infrasound data from nearby islands, as well as lightning data from the World Wide Lightning Location Network for signs of renewed activity.
(12) Volcanic cloud height: 25,000 ft asl estimated by satellite & pilot report
(13) Other volcanic cloud information: Cloud moving towards northeast
(14) Remarks: The SIGMET warning message for aviation, issued by the National Weather Service Alaska Aviation Weather Unit currently is in effect up to 25,000 ft above sea level. Status of the ash cloud forecast can be found at their website at http://aawu.arh.noaa.gov/
(15) Contacts: Michelle Coombs, Scientist-in-Charge, USGS
mcoombs@usgs.gov (907) 786-7497

Jeff Freymueller, Coordinating Scientist, UAF
jfreymueller@alaska.edu (907) 322-4085
(16) Next Notice:

AVO/USGS Volcanic Activity Notice

Volcano: Bogoslof (VNUM #311300)

Current Volcano Alert Level: WATCH

Current Aviation Color Code: ORANGE

Issued: Monday, June 26, 2017, 6:48 PM AKDT
Source: Alaska Volcano Observatory
Notice Number:
Location: N 53 deg 55 min W 168 deg 2 min
Elevation: 492 ft (150 m)
Area: Aleutians

Volcanic Activity Summary: Seismicity for the eruption at Bogoslof volcano at 00:45 UTC on June 27 (16:45 AKDT on June 26) remained elevated until 00:59 UTC (16:59 AKDT) and has since declined to background levels. The eruption produced a volcanic cloud moving northeast with an estimated altitude of 25,000 ft asl by satellite data, and a pilot reported a visible cloud at 22,000 ft asl. Given the lower altitude of the volcanic cloud and short duration of the explosion, the Aviation Color Code remains ORANGE and Volcano Alert Level WATCH.

Recent eruptive episodes have produced multiple short-duration explosions interspersed with minutes to hours of inactivity between events, and future explosions could occur with little to no warning. AVO will continue to monitor seismic and infrasound data from nearby islands, as well as lightning data from the World Wide Lightning Location Network for signs of renewed activity.


Recent Observations:
[Volcanic cloud height] 25,000 ft asl estimated by satellite & pilot report
[Other volcanic cloud information] Cloud moving towards northeast
[Lava flow/dome] N/A
[Lava flow] N/A

Remarks: The SIGMET warning message for aviation, issued by the National Weather Service Alaska Aviation Weather Unit currently is in effect up to 25,000 ft above sea level. Status of the ash cloud forecast can be found at their website at http://aawu.arh.noaa.gov/

Contacts: Michelle Coombs, Scientist-in-Charge, USGS
mcoombs@usgs.gov (907) 786-7497

Jeff Freymueller, Coordinating Scientist, UAF
jfreymueller@alaska.edu (907) 322-4085

The Alaska Volcano Observatory is a cooperative program of the U.S. Geological Survey, the University of Alaska Fairbanks Geophysical Institute, and the Alaska Division of Geological and Geophysical Surveys.
VOLCANO ALERT LEVELS
NORMAL
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
ADVISORY
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
WATCH
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway but poses limited hazards.
WARNING
Hazardous eruption is imminent, underway, or suspected.
AVIATION COLOR CODES
GREEN
Volcano is in typical background, noneruptive state or, after a change from a higher level, volcanic activity has ceased and volcano has returned to noneruptive background state.
YELLOW
Volcano is exhibiting signs of elevated unrest above known background level or, after a change from a higher level, volcanic activity has decreased significantly but continues to be closely monitored for possible renewed increase.
ORANGE
Volcano is exhibiting heightened or escalating unrest with increased potential of eruption, timeframe uncertain, OR eruption is underway with no or minor volcanic-ash emissions [ash-plume height specified, if possible].
RED
Eruption is imminent with significant emission of volcanic ash into the atmosphere likely OR eruption is underway or suspected with significant emission of volcanic ash into the atmosphere [ash-plume height specified, if possible].
Contact AVO Privacy Accessibility Information Quality FOIA
URL: www.avo.alaska.edu/activity/avoreport.php
Page modified: February 17, 2017 10:11
Contact Information: AVO Web Team

twitter @alaska_avo
facebook alaska.avo
email Receive volcano updates by email: USGS VNS